package com.qk.interceptor;

import com.qk.utils.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 1. 获取请求路径
        String uri = request.getRequestURI();

        // 2. 判断请求路径是否为登录请求
        if (uri.contains("/login")) {
            log.info("登录请求:{}, 放行", uri);
            return true;
        }

        // 3. 获取token
        String token = request.getHeader("token");

        // 4. 判断是否有token，如果没有响应401
        if (token == null || token.isEmpty()) {
            log.info("请求未携带token, 响应401");
            response.setStatus(401);
            return false;
        }

        // 5. 解析token,如果Token不合法，响应401
        try {
            JwtUtils.parseToken(token);
        } catch (Exception e) {
            log.info("token解析异常，响应401");
            response.setStatus(401);
            return false;
        }
        // 6. 放行
        return true;
    }
}
